Spindle driving mechanism



Aug. 25', 1931. J. A. KOOISTRA Q 1}v320,31-0 SPINDLE DRIVI NG MECHANISMFiled Feb. 6, 1951 i B 35 Z2 35 u ,w M

a? J 36 [3 I= E as I4- INVENTOR.

- ATTORNEYS rammed Au 25,. 1931 Y UNITED STATES PATENT; OFF ICE Joan A.KOoIS'IRA, or wnrrrnsvintn, iiiAssaoi-insnirs, assreivoit TO wm m vivmonrnn worms, or ,WHITINSVVILLE, massacnnsnrrs I sPINnLE :onrvmeMaoHAnIsM Application filed February 6, 1931. Serial No 513,983.

This invention relates to'spinning or twisting machines in which thespindles and spindle rails-are raised and loweredduring the operation ofthe machine. 2

It is the general object of my invention to provide a spindle drivingmechanism for use in such machines so designed that it is effective andsatisfactory for driving the-spindles in either direction, withoutsubstantial.

chan in driving tension. I

A further object is to provide @COHSCIHG tion in which both the upperand lower shafts are mounted in fixed bearings, so that power vmay beconveniently applied through either usual commercial mechanism may beused for k improvements, and

Fig. 2 is a partial plan view thereof. Referring to the draw ngs, 1 haveshown parts of a spinning or twisting machine comprising an end frame 10having ring-rails 11 fixed to the sides thereof and having spindles 12mounted in bases 13 which are secured in vertically movable spindle.rails 14. Any

g p the spindle rails 14 and the spindles 12 carried thereby.

An upper shaft is mounted in fixed bearraisin and lowering ings 21 andsupportsa drum or a plurality of pulleys 22. A lower shaft 24 is mountedin fixed bearings 25 and supports a lower drum or a plurality of'pulleys26.

A cross frame member extends from side to side of the spinning ortwisting machine and is secured at its n er ends to the under sides ofthe spindle rails 14:, so that. the spindle rails at the two oppositesides of the machine, together with the cross frame member 30, will allmove upward or downwardas a unit. In the preferred construction, aplurality of the cross frame members 30 are provided, spaced apart asindicated in Fig. 2.

"Rod s01" shafts 32 extend through'openings in the cross frame, membersand are preferably fixed therein. The rods 32 rotatably support looselymounted guide pulleys Additional guide pulleys 35 are pivotally mountedat the upper ends of arms 36,

which are themselves pivotally supported on the rods or shafts '32.Tension springs 37 connect each pair ofopposite arms 36 and tend to.draw the arms 36 and the upper guide pulleys 35 toward each other. Stoparms 38 (Fig. 2) are fixed on the rods 32 and limit outward swingingmovement of the arms 36. 1 u

' A continuous'driving belt B is commonly provided for each group offour spindles 12,

drivingtwo spindles on'each side of the machine, buteach'belt Bmay'drive onlyone. spindleat each side. The beltB passes over 'the upperdrum or driving'pulley 22, under a guide, pulley '35 around a pair ofspindles- 12 atone side of the machine,,over a guide over a second guidepulley-33, around a pair of spindles at the opposite side of the machine from those first. mentionedfand' then under a second guide pulley35. and back over the upper'drum or pulley 22, all as clearly showninFigs. 1 and-2.' 1

The swinging guide pulleys=35 are yieldingly drawn against the belt B bythe springs 37 and actto take up the slack in the driving belts. i

' Either the upper shaft 20 or the lower shaft 24.- may be positivelydrivenand when either shaft is driven, the other shaft maybe left freeto rotate. V Preferably, however, the

shafts20 and'2t are connected by l h i ao (Fig. 1) running oversprockets .(not shown) proportionate to the diameters of the dru 22 and'26, so that the two drums will be ro tated in'unison and with thesameperipheral speed,thus providing a double driving engagement with thebelts B. i f WVith. the construction shown and described, it will beseen thatthe cross frame pulley 33, under the lower pulley ordrum 26," i

members 30, with their. supported guide pul- V leys 33 and v 35, may bemoved upward or, downward with 'the spindles 12 without changing theeffective length of the belts B or tion, the right hand arm 36 will moveoutward to fi ed position against its stop 38 and the let hand pulleywill take up the slack. The conditions of operation are thus identical,regardless of the direction in which the belt is driven and in which thespindles are rotated.

In the claims, the word pulley will be understood to include a drum orcylinder, which is in effect a pulley of wider face.

Hzwing thus described my invention and the advantages thereof, 1 do notwish to be limited to the details herein disclosed, otherwise than asset forth in the claims, but what I claim is 1. Spindle drivingmechanism for axially movable beltdriven spindles comprising a machineframe, upper and lower shafts mounted in fixed hearings on said frame,pulleys on said shafts, a cross frame member mounted to move verticallywith said spindles, guide pulleys rotatably mounted in fixed relation tosaid cross frame member, take-up pulleys mounted on arms pivoted on saidcross frame member, means to apply yielding tension to said arms, andcontinuous belts each engaging pulleys on said upper and lower shafts,guide pulleys, takeup pulleys and a plurality of spindles.

2. lSpindle driving mechanism for axially movable belt-driven spindlescomprising a machine'frame, upper and lower shafts mounted in fixedhearings on said frame, pulleys on said shafts, a cross frame membermounted to move vertically with said spindles, guide pulleys rotatablymounted in fixed relation to said cross frame member, take-up pulleysmounted on arms pivoted on said cross frame member, means to applyyielding tension to said arms, and continuous belts each engagingpulleys on said upper and lower shafts, a guide pulley, a take-up pulleyand a plurality of spindles at one side of the machine and a guidepulley, a take-up pulley and a second plurality of spindles at theopposite side of the machine.

3. Spindle driving mechanism for axially movable belt-driven spindlescomprising a cross frame member movable vertically with said spindles,guide pulleys mounted on said cross frame member, take-up pulleysyieldingly mounted on said cross frame member, vertically spaced pulleysrotatable about fixed axes above and below said cross frame member, oneof said spaced pulleys being positively driven, and a single beltconnecting said spaced pulleys, said guide and takeup pulleys, and aplurality of said spindles.

l. The combination in spindle drivim mechanism as set forth in claim 3,in which fixed supports are provided for said spaced pulleys.

The combination in spindle driving mechav sun as set forth in claim 3,in which means is provided for rotating said spaced pulleys in apredetermined speed relation.

6. Spindle driving mechanism for axially mevable belt-driven spindlescomprising a machine frame, upper and lower shafts mounted in fixedbearings on said frame, pulleys on said shafts, a cross frame membermounted to move vertically with said spin 1 es, guide pulleys rotatablymounted in filled relation to said cross frame member, take-up pulleysmounted on arms pivoted on said cross frame member, means to applyyielding tension to said arms, and stops to limit outward swingingmovement of said arms.

In testimony whereof I have hereunto affixed my signature.

JOHN A. KOOISTRA.

